If I'm not wrong it doesn't work if you're already subscribed.
That's what it seems like. I believe any Gold time I add will be automatically converted to less GPU time, indicated below.
1 month of Gold | 20 days of Ultimate |
---|---|
3 months of Gold | 50 days of Ultimate (1+ month) |
6 months of Gold | 79 days of Ultimate (2+ months) |
12 months of Gold | 4 months of Ultimate |
24 months of Gold | 8 months of Ultimate |
1 month of Xbox Game Pass (Console Games) | 20 days of Ultimate |
3 months of Xbox Game Pass (Console Games) | 2 months of Ultimate |
6 months of Xbox Game Pass (Console Games) | 4 months of Ultimate |
12 months of Xbox Game Pass (Console Games) | 5 months of Ultimate |
24 months of Xbox Game Pass (Console Games) | 10 months of Ultimate |
1 month of Xbox Game Pass PC Games | 20 days of Ultimate |